Tests fail (with newer Mojolicious versions?)

[eserte]

Most of my smokers report the following failure:

Mojo::Reactor::EV: I/O watcher failed: Can't locate object method "is_status_class" via package "Mojo::Message::Response" at /usr/perl5.16.3t/lib/site_perl/5.16.3/MojoX/JSON/RPC/Client.pm line 111.

    #   Failed test 'message received'
    #   at t/10-before_forward.t line 30.
    # Looks like you failed 1 test of 3.

#   Failed test 'w/o before-forward'
#   at t/10-before_forward.t line 34.
Can't use an undefined value as an ARRAY reference at t/10-before_forward.t line 31.
# Tests were run but no plan was declared and done_testing() was not seen.
# Looks like your test exited with 255 just after 1.
...(etc.)...

This seems to happen for Mojolicious 7.31 and newer:

****************************************************************
Regression 'mod:Mojolicious'
****************************************************************
Name           	       Theta	      StdErr	 T-stat
[0='const']    	      1.0000	      0.0000	27320188019381960.00
[1='eq_7.05']  	     -0.0000	      0.0000	  -1.75
[2='eq_7.30']  	     -0.0000	      0.0000	  -4.95
[3='eq_7.31']  	     -1.0000	      0.0000	-25130917837409580.00
[4='eq_7.32']  	     -1.0000	      0.0000	-24939805422496476.00

R^2= 1.000, N= 28, K= 5
****************************************************************